Improvement in machines for making rope-molding



2 Sheets--Sheet i. H. G LANZ.

Machine for Making Rope Molding. No. 167,329. Patented Aug. 31,1875.

2 Sheeis--Sheet 2.

H. GLANZ. Machine for Making Rope Molding.

Patented Aug. 31,1875.

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HENRY GLANZ, OF BUFFALO, NEVI"` YORK, ASSIGNOR OF ONE-HALF HIS RIGHT TO PETER C. GLANZ, OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR MAKING ROPE-MOLDING.

Specification forming part of Letters Patent No. 167,329, dated August 31, 1875; application filed May 28, 1875.

To all whom t may concern y .Be it known that I, HENRY GLANZ, of the city of Buffalo, in the county of Erie and State of New York, have invented an Improvement in Machines for Making Rope-Moldings; and I do hereby declare that the following is a full, clear, and exact description of the same, having reference to the accompanying drawings, making a part of this specification, and illustrating my invention more fully.

This invention relates in general to improvements on machines for making rope-moldings, and its nature will be first ascertained, and

then pointed out in the claims.

In the accompanying drawings, Figure l is a front elevation of my rope-molding machine. Fig. 2 is a plan of the same. Fig. 3 is a perspective view of the cutter-head. Fig. 4 is a side elevation; Fig. 5, a longitudinal section through the cutter-head; Fig. 6, a transverse section in line :c x, Fig. 5. Fig. .7 is an end view of the same 5 and Figs. 8, 9, and 10, detached views of the cutters.

Like letters of reference indicate similar parts in the various figures.

To enable others skilled in the art to which my invention pertains to make and use the same, I shall proceed to describe its construction and operation.

A is the bed or base plate of my machine. It can-be made of any suitable material, and may be varied'in form to suit the taste of the maker. Upon this bed-plate I place, at suitable distance apart, two frames, I I, made separately or connected together. These frames are provided with bearings for a cutter-head, O, and also with brackets containing like bearings for the main shaft D, and are made in the usual manner. either by fitting in separate boxes, or by babbitting the castings. The cutterhead C, whose particulars will be hereinafter specially referred to, consists of a metallic tube, having openings CIl for the insertion of the cutters C", and the passage of the chips, and lugs C cast on to fasten and adjust the said cutters in the usual manner. Upon the cutter-head O, aud near one end thereof, l place a spur-wheel, F, to which motion is communicated from the main shaft I) through the pinion E, while the main shaft is revolved by the main driving-pulley G. B B are two sets of standards, securely fastened to the bed-plate A by bolts, and to the frames I I by studs, as shown in Fig. l. These standards are provided with adjustable boxes for the'shafts K, and have springs L placed be tween them and on the top ofthe upper boxes, to assist in the necessary adjustment of the friction-rollers O, which is accomplished by the adjusting-screws N. O are two sets of friction-rollers, being grooved sheaves attached to the projecting end of the shaft K. They are revolved by the pulleys P P and the driving-pulley P. P P are connected by a belt, in the usual manner. The friction-rollers O are arranged, in a manner as clearly shown in Figs. l, 2, and 4, so that their center line is at right angles with the center line of the cutter-head G. The cutter-head G has a smooth cylindrical bore on one end, and is provided on its other end with a bushing, R, having a threaded core, which said thread corresponds to that of the ropeinolding to be produced. The cutter-head has also two trunions, T, Fig. 3, upon which it revolves within the bearings of the frames I. The bushing R I produce by placing into the cutter-head a mandrel ofthe exact size and shape of the desired molding, and casting Babbitt or other soft metal in the intervening space, and afterward unturning the said mandrel; but it may also be made separately and inserted into the cutter-head C. The cutters C I construct in two longitudinal pieces, fastened together by a screw passing through them, and make them retain their relative position by the pin S. These cutters have two curved cuttingedges, corresponding to the outline of the ropemolding when in their oblique position, and intersecting each other. The joint of the two pieces constituting this cutter is made in a line with this point of intersection in order to facilitate the grinding thereof, which is very difcult to accomplish in solid cutters on account of the acute angle of the two intersecting curves. My cutter, being constructed as described, presents only curved edges, and is thus easily sharpened. In order to enable me to sharpen these cutters without altering their shape thereby, and always to produce exact fac-similes of the same, I cave the cutterblanks on their lower side for some dista-noe` fronrthe end, parallel with the upper-side, by suitable milling machinery, and then bevel, harden, and grind them on the upper side only, whereby the exact shape of the cutter is retained. The particularsof these cutters-.are clearly illustrated in Figs; 8, 9, andA 10. I; attach as many of these cutters to the cutterhead as the molding has threads or turns. In the drawings I illustrate one having three: cutters, which is thus capable of producing rope-moldings with triple twists. It will be observed that, bymaking the bushing It 4 removable, and keeping a number of them0f different sizes and pitches internally, on hand, I can produce all the various sizes and pitches of ropee-moldin gs Without. changing or substituting the cutter-heads, bysimply adjusting the cutters to the various sizesso that a. cutter-head having' a clear front. opening of, say, three inches is capable 0f producing, in conf.

junction with-,the dierentbushemall thesizes.

belowthat diameter. As a matterof economy in the rst cost of my machine, this arrangement is adecided feature, althouglnifor` doing a large amount of work with, enemachine only, it may befmore advisable'to keep-v a number. of complete cutter-heads and accessories, set tothe different sizes, Ste., on hand, andremovingand substituting` them asocca. sion demands, for the rea-son that the removal and substitutionisquicker done than the; adjustment of the-cutters.

Thel operation of my machine is asfollows: I first round the sticks tobeconverted into rope-moldings in a suitable machine, and, my Inachinebeing put in motion, pass them be-v tween the circulargrooves of thefront setoffriction-rollers, which will forward the same to the cutters, rlhe circumferential speedof these friction-rollers is, determined by the pitch of the molding; butI itis-.always best to run-them somewhat faster, asthey willithereby release the threads from strain whenpassing the feed-bushing R, which alone governs.;

the speed or forward movement of,` the sticks.

These, after passing the cutters, enterV the left twists.

threaded bushing R, its thread engaging with, that of the molding, and feeding the same along, the friction-rollers assisting thereby, and at the same time preventing the sticks from turning.

Rope-moldings are now made with right or 'Ihesetwo kinds can be easily madeon mymachine by arranging the cutters and feed-bushings correspondingly, and by revolving the cutter-head in the direction desired. I produce the change of revolution by changing the belt of the main driving-pulley G, either running it parallel or crosswise, as

the case may be 5; but Iinay alsoproduce-the 4desired result by other well known and suitable agencies. A

Having thus fully described my invention, I

desire to secure to meby Letters Patentl. rEhe combination, with the frames I I, havingfthe bearingsk forthe cut-tenhead, and for-thelmain. shaft, ofsthe shaft D, pinion E, spur-wheel F, cutter-headeC, andthe-feeding device,consisting.ot thevstandards. B B', pro- .vided with adjustable yielding boxes, and the groovedgfrictionfsheavesO, thewh ole arranged tooperatesubstantially asdescribed, and. forthe purpose set forth.

2. The'cutterGQmadeof two longitudinal pieces, each having asingle curved cuttingedge, thesaid pieces being jointed longitudinally in a line with/the intersection ofthe two curves by a screw and steady-pin, passing transversely through the adjacent. pieces, substantially asY described and shown, and for the use and;purpose setfforth.

3. Theicombination, Withtherevolving cut v ter-head G, of the internally-threaded.feedbushing R, and a; doubleV set of adjustable, yielding, grooyed friction-rollers, O, arranged as described, substantiallyin:the-manner and" for the purpose set forth.

In testimony whereof I have` hereto subscribed my name in: thepresence of twoat- HENRY VGLAN-Z".

testingwitnesses.

Witnesses:

MICHAEL J. STARK, '.DHos. EDMoNDs. 

